I want to thank everyone who has responded to this thread, and to the member who has also contacted me privately. We are currently in Florida. We arrived early afternoon on Sunday. The trip down, beginning 5:30 AM on Saturday, was pleasantly uneventful. The weather/EV driving conditions were nearly perfect. There are a few points that I think will be helpful to mention, and other things that I can comment on if there are any questions about the trip in general. First, pertaining to the subject of this thread: my concerns about the lack of a Supercharger in this part of the state were unfounded, given the scenario under which we are travelling. We left Port Orange, on the East coast with a full charge so as to arrive on the west coast (about an hour north of Tampa) with as many miles as possible. We arrived at my in-laws with about 120 miles of range remaining.
That was certainly enough range to do reasonable driving in the area, but not enough to get back to P.Orange, even if we never drove the car while here. I was going to wait until Monday to see how the charging went using my in-laws 110 outlet, but when Btrflyl8e commented on the problems they experienced charging up using 110 in hot weather, I decided not to wait. The way the car was positioned in the driveway, I had to use a heavy duty ext. cord that I had brought with me. After dialing down the amps to 12, I plugged in the Tesla Mobile Connector, and the charging began. To my surprise, it worked. To an even more pleasant surprise, I was getting 4 miles of range per hour. We all know that that isn't much, but when you are staying someplace for many hours, most people will get sufficient range to do what they need to do and get where they need to get. We have done several day trips in the MS and have had no limitations on where we wanted to go. As a result of this, we are planning on taking a more direct route back to Long Island by bypassing Port Orange and stopping at the St. Augustine SC as our 1st stop. That's about 160 miles away. Something that I found interesting about charging at 12 amps is that the 4mph rate is constant all the way through to a full charge.
BTW, Tesla did respond to my request about the proposed SC in Orlando. All that they said was that it was in the beginning stages of development. I assume the same is true of the SC in Tampa. If one has a full day or two of visiting, where a 110 outlet is available, then the current locations of the SCs are sufficient to get most places in the state. When Orlando, Tampa and Miami come on-board, it will obviously be a no brainer, even under the worst conditions.
One thing I wanted to mention, which is slightly off topic, is that the 4 stalls at the SC at the Newark, DE rest stop will be woefully inadequate in the not too distant future, especially when Model X rolls out. I do not see anything on the SC map that shows any new locations (thru 2015) on the I-95 corridor in Maryland. That means that many people are going to need to use the Newark SC on their way to Potomac Mills, VA!